Electric locomotive.



P. L. SESSIONS. ELECTRIC LooMoTIv. APPLICATION FILED JUNE 2, 1908.

Patented Jan. 5, 1915.

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Patented J an. 5, 1915.

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UNITED STATES PATENT FFICE.

FRANK L. SESSIONS, OF CGLUMBUS, OHIO. ASSIGNOR TO THE JEFFREY MANUFACTUR- ING' COMPANY, A CORPORATION OF OHIO.

ELECTRIC LOCOMOTIVE. i

Specification of Letters Patent.

Patente-. 1 Jan. 5, 1915.

Application filed June 2, 1908. Serial No. 436,309.

To aZZ lils/loin 1' t m f; g/ maf/aja Be it known that I, FRAM( L. SnssioNs, a citizen of the AUnited States, residing at Columbus.l in the county ot Frrnklin and State of Ohio, have invented certain new and useful Improvements 1n Elm-tric Loco 1notives, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to electric gathering' locomotives used particularly in mines to collect the coal or ore cars trom the Various rooms and parts ot the mine in which the coal er ore is being cut and loaded. Cable reeling devices are commonly used upon .sich locomotives to enable the locomotive te reel up and pay out its own conductor and thus traverse parts of the mine which are'not equipped with permanent trolley vrire installations. The trackage leading trom the main entry through side entries and into the rooms which are being worked is a temporary'construction and often conoi' wooden rails, or iron fails which it would be inconvenient and unecononiifal to electrically bond. Under these circumstances it is necessary for the flexible cable whiehis carried by the reel to be made otv two insulated conductors, the fixed ends of which are 'attached at the main entry to the trolley wire and to the track rail respectively.. lilith this ar 'angenient the two conductors torni a complete Circuit from the trolley wire to the locomotive motor and back to the main entry rail as the locon'iotive moves away from the main tracks into the rooms and the rails in the rooms may be ot wood or steel rails without bonding or ishfplates. Two kinds of double conductor cables hate been used, one consisting of two insulated wires, laid side by side, and suitably bound together, and the other consisting of two conductors arranged concentrically and insulated from each other, the outer conductor being a cylindrical shell of wires helically interlaced. lilith the former cable, v'. e., the llat duplex cable, its noncylindrieal torni causes it to twist and wind unevenly upon the, reel, and in some instances to wind so anevenly as to causetit to strike parts ot' the metal framey of the locomotive adjaeentlytiirrounding the reel so V as to wear off the insulation and ground the circuit. ln mine locomotives it is necessary to ecencmize space in every possible way and the reel and adjacent parts of the locomotive must be arranged very compactly. It there` fore 4happens that if the cable does not wind in perfectly even uniform layers back and forth upon the reel, the trouble just dcf-iflribcd is niet with.

lilith the concentric duplex cable, there is a tendency after it has been wound and unvvound repeatedly 'for the conductors to become of `litl'erent lengths. The continued reeling and unreeling ot` the cable Causes a cri1nping"ot` one or both of the conductors in their sheaves, and a` corresponding kinking,T ot the cable throughout its entire length. lVhen thus distorted, it is almost impossible to straighten the cable or spool it evenly upon the reel. Furthermore, there is always the tendency in these duplex cables ot either kind for the conductors to come into contact with each other because ot' poor insulation or because ot' the insulation becoming worn and thin by long use. It is the object of this invention to overcome these diiiiculties by using two reels upon the locomotive, each reel carrying a single conductor cable. While two cables'eould be wound upon one reel, this arrangement would be an undesirable one inasmuch as one of the cables might stretch in use more rapidly than the other. and cause uneven windinv. It is also desirable to provide separate spooling devices, ene for each cable since the cables may not wind at the same speed, each spooling device being driven across the face of its drum at a speed proportional to the number ot revolutions of that particular drum.

Another advantage of my invention lies in the tact that the single conductor cables are ordinarily more apt to be 'carried .in stock by electrical supplv houses. Ease of repair is another consideration leadingF to the employment ot the single conductor cable. i

Another object of my invention is to provide improved power transmitting,V devices and clutch mechanism between the source of power, such as the wheel axle, or the motor shaft, and thei'icable reel.

Other objects are to provide improved electrical connections, improved arrangement and construction of the spooling detions. Fig. e

""h les,

l vicelnnd improvements in the general errungenient of the parte ol' the cable reeling mechanism.

Figure l is s side elevation of s locomotive embodying my invention. Fig. 24 is e plan view ot' the saine. Fig. 3 is on end view of the cable reel and driving connecis :i centrahlongitudinal horizontal section of the cable reelolong lines l-- of Fig. 3. trol, longitudinal vertical section of the reeling mechanism along tbe line 5 5 of Fig. il is e perspective View of the cable reeling mechanism. Figs. 7 and 8 ure detail perspective vievvs showing the electrical Contact devices Within the reel together ivith'udjucent parts. Figs. 9 and 10 show the two kinds of disks used in the friction clutch. Fig. il is e sectional view of the shaft (57 und related parts.

ln the drawings l-l indicate the side frame pieces and 2 2 the end trame pieces of the' locomotive. The forward pair of the locomotive wheels 3-3fare driven by the motor l, which carries 'the pinion 5 adapted to engage with the gear wheel G upon the wheel axle 7.

Upon vthee-forward end of the locomotive, are niountedtlie two-similar cli-uref.: S and 9, on which oil euch is wound c flexible insulated electric conductor cable 1G, il. The cable on the lel't hond drum 8 is designed to` be attached to the trolley wire in the mainl entry, and the cable on the right hand drum 9 is designed to be connected to the negative side of the circuit, that is, to the track rail in the entry. These drums are revolubly mounted upon' the shui't l?, both shaft and drums being carried? by the bearing supports l2 secured to the locomotive frame puits in a manner to beliercufter described.

The reels 8 and 9 are made up respectively of the spooling` cylinders 8 and 9, the end flanges 2-l2 and l3-13, the annuler Webs l2 end l ond the hubs il and l.

Between the liubs 1lond l5 and the shaft 1T, are located thebearing linings lo. Keyed to the shaft l?, and mounted betueen the inner ends, of the two reel hubs is tlie'sl'eeve 18, upon Winch, in turn, is keyed the sprocket Wheel 20, adapted to be driven, in a imponer to be presently described, by the chem 21x.

sprocket wheel 20, the friction disks 9.4i-, 2s (see Figs. 9 and l0) are pressed, by means of the plates 25 and springs 26, each' of the latter being vpositioned at one end in sockets in the corresponding plate 25 and abutting` it the other end against one of the adjust- :ib-le collars 27, which are screw threaded l upon the sleeve 18; These friction dislts 24.

and 24a, es clearly shown inligs. 9 and 10, are of two kinds, srroneed alternately. tiiose of one eet being notched around tlieirjouter edges to engage .and be held stationery by Fig. 5 is an enlarged cem,

the rib keys 28, cast upon'tlie" inner lsurfsce of the reel spools, and those of tlie other side being internally notched to lit the keys 19,

by ywhich the spocket Wheely20`is xed in position upon the sleeve 18.

lt is evident that by this construction and arrangement of ports, the revolution of the sprocket wheel 20 will cause the drums 8 and 9 to wind the cables l0 and 11, maintaining in them c. predetermined tension, practically constant in degree, each cable being wound independently of the other.

'The conductor ring 30, provided with a contact ring-32, by means of the springs 34 and the rods 33 rigidly secured to thecontact ring and slidably engaging sockets in the conductor ring 35, is mounted to be held yieldably in contact with the conductor ring 30. c

The end of the negative cable Ll, lis attached to the web 13"- of the drum 9'by the screw 38 and the electric circuit is completed to `'the negative terminal of the motor by meins of the metallic frame parts of the reel ont! locomotive. A

'l`he hubs 14 and 1:1 are each extended out y Word to form journals 39, 39, which turn in he bearings el, 4l, of the bearing supports 42. Bearing bushings l.lO-4() are interposed between the journals 39-39 and the bearings lil-41. The bearing supports are attached to the yoke plates el, e4,

which span the cross-birre 45, 46, supported bolted :to the loew by the foot pieces e?, e7, motive side frames. Y

The lubrication of each journal 39 is accomplished by means of an oil bon-i8 in the top the oil hole 49 leads downward connecting with the oil `groove 50 in the bearing' bushing 40 and with one or more oil holes 51 in l 7 the journal 39, communication' being thus Against jtlle lateral annular faces of the estblished with the bore end l5. r y Y The open ends of these hubs are closed by tli'e plugs 52, 'which are keyed in place. 0n the outer ends of the plugs are formed the pinions 53, each ofwliich meshes with a gear .Wheel 54 on e stu y pin 56 mounted in the boss 57 on the corresliondine,` bearing snp-v l of the hubs 1 4 port e2. Euch of the stud pins 56 alsorcarries a. sprocket wheel 55 secured' to the corresponding gear wheel.

The double spooling device, the izeneral' a construction of which is similar to the 'well of the bea-ring support 42, from which known spooling mechanism used with cable reels, arranged adjacent to the reel drums. The rods Woland b'l rotate in bearings in the brackets T2, which constitute extensions of the yoxe plates 'f-t. Flach oi these rods is prenda-'d at one of its ends with a sprocket' wheel` one sprocket wheel at each side ot' the machine, these sprocket wheels (52 being connected by the chains b3 with the sprockets liach of these rods 60 and 6l has formed thereon a compound screw thread for onehaltl oi' its length, the threaded half ol one rod lying` opposite to the smooth half of the other rod.

A follower guide 59 reciprocates upon these rods across the face of each oi the drums and is given greater rigidity by means of the extension 59n which embraces the cross-bar 46. By this construction each spooling guide is always in the same relative position with respect to its corresponding drum for any particular stage of the operation of winding or unwinding` and there is no positive pov.er-transmitting connection between the two spooling mechanisms.

In bearing boxes 74 at the ends ot' bracket arms T3, which extend reaiwvardly from and are constructed rigidlyv with the motor casing and frame, is journaled the com1ter-shaft 6T which is positively geared to the gear wheel Gon the axle 7 by the pinion GG.

Sleeved upon this counter-shaft 67 is the sprocket wheel l2 connected to the sprocket wheel Q() upon the reel shaft by chain 21. This sprocket wheel 22 is prevented from rotating when the reels are paying out the cable. by means of the ratchet wheel (i4 and spring-pressed pawl G5 engaging therewith and pivotally7 mounted upon parts rigidly connected to the motor frame and casing.

Between the sprocket wheel 22 and tbe gear wheel GG is interposed the uni-directional drive clutch 'Tfn composed of spiral jaw clutch elements GS and (i9, the latter cast integral with the sprocket wheel 22 and the former splined upon the countershatt (i7.

The clutch element G8 is brought into operative relation with the jaw G9 bymeans of the shifting bell-crank lever 7() and the operating rcd 71 extending back within reach ofl the mftorman. The two arms of this bell-crank lever are preferably made separate and are held' yieldably in rightangled relation to each other by means of the spring 76. In this manner when the locomotive is traveling away from the main entry and the cables are being paid out, provision is made for allowing the clutch element 68 to vibrate. axially upon the shaft (i7 as its teeth ride over the teeth of clutch element G9 which is held against rotation by the pawl The yieldable friction clutches between the sprocket wheel 2O and the reel drums, the pawl and ratchet mechanism td and (35 and the spiral jawv clutch T5, cooperate in such a manner that when the locomotive is moving away from the main entry the cables unwind from the drains S and t), and a constant tension is yieldahly 1na`mtained in the cable, while on the (ther hand when tlz-i lccon'ictive is moved in the reverse direction and the cables are'being wound upon the reels the same vieldable i'rictional devices are again utilized to maintain constant tension in the cables.

lVhile I have described a double reel mechanism in order to illustrate one feature of my invention, it is to be undesteod that one of these reels can be considered as an independent unitary structure ii: combination with the power transmitting devices and clutch mechanism, and that much of my invention is equally applicable to a locomotive equipped with a single-cable reel.

lVhat I claim is:

l. The combination in an electric locomctive, of two rotatable reels mounted on the locomotive frame, two single conductor cables each secured at one end to one of the 1'cels`for winding thereon and each adapted to be connected at its other end to a i'xetl` conductor, and driving mechanism interposed between the locomotive axle and the Tsaid reels, the said mechanism tending to drive the said reels to wind the cables at a speed greater than the speed oi travel of the locomotive and the mechanism comprising yieldable devices, one for each reel, whereby each reel is enabled to rotate independently of the other at the speed permitted by its own cable.

2. The combination in an electric locomotive, of two rotatable reels mounted on the locomotive frame, two single conductor cables cach secured at one end to one of the reels for winding thereon and each adapted to be connected at its other end to a fixed conductor, driving mechanism for the reels `comprising two yieldable devices one for cach reel, two cable-guide poolingv devices, one for each reel, and means for positively gearing each spooling device with its corresponding reel. v

3. In an electric locomotive, the combination with a'main frame, axles and track wheels kupon which the frame is mounted,

and a motor operatively connected with the axles and track wheels, of two separate reels mounted en the frame and capable of rrtation independently of each other` two electric conductor cables each connected at one end with one reel to be wound thereoniand each adapted to be connected at-its other end to a fixed electric conductor, and a driving mechanism for the reels comprising a shaft, a clutch capable of"transmitting` power to rotate the shaft in one direction tively connecting @they 'eel, means for driving the power element two cable spooling niehanisms, one for each reel, means for directly and posieach spooling ldevice with its reel, and a common tiansvei'seguide element for both ofthe spooling devices.

l0. ln an electric locomotive', 'tile'.4 combination With a trarne comprising two parallel side pieces, axles and track Wheels for the frame, and a drivingmotor for the axles and track. wheels, of two parallel transverse bars extending from one side piece to the other, a caole reeling mechanism mounted on 'the cross bars for rotation about a transverse axis, and transversely Lreciprocable cable spooling mechanism Amounted on the cross bars adjacent the cable ieeling mechaf nism, one of the cross bars serving as e guide for the spooling mechanism.

il. in an electric locomotive.7 the combination with a frame comprising two parallel side pieces, axles and track wheels tor the frame, and a driving motor for the axles and tiaol wheels, of two 'parallel transverse bars extending from one side piece to the other, two independently rotatable `reels mounted in tyansverse axial alinement on the two ti'ansveise bars, and two transversely iecipiocable cable spooling devices, one for each reel, each of the spooling devices being provided with an element which engages with and is guided oy one of the cioss bars.

ln testimony wlieieoi` I afiix my signa.- tui'e, in presence'otv two witnesses.

` FRANK L. SESSONS. `Witnessesz E. P. SNIVELY, r. W. Mum. 

